Turnbuckle



i 1,625,818 Aprll 26, 1927. R C' MMRTHUR TURNBUCKLE Filed NOV. ll. 1925 5) M fu f um MW Patented Apr. 26, 1927,

Lassie UNITED f'SiTALIzES j Pgl`fiENiT i@ FELICE.

ROBERT C. MOARTHR,QOF SALAMANCA, "NEW YORK, ASSIGNOR T WALTER O. FRED- RKSGN,A.,'EDVARD^KREGERAND' ROBERT C. "NICARTUR, .lRUS'IBIES,. OFSALA- lv'lANCA,r NEEV YORK, CONSTITUTING 'MCAR'IHUR TU'RNBUKLE COMPANY.

ApplieatiolrY filed November tThis `,invention relates to improvements in turnbuclrles and has for: its .principal object 'tofprovide means-ior lpreventingthe accidental displacementorloosening of ,the rods of the turnbuckles from ther'yokeeorsframe "when the `turnbuckle is inuse.

When turnbuokles arefusedinnIoil pump pull rods, :drill rigs, derrieks, guy. ropes and `the like, there `is considerable vibration, and 1o was i at result. the1- oppositely threaded. rods of the turnbueklesv-Will ibeeoine. loose.v and cause ,a slack1 to ocour, which.as afresult renders the v.turnbuekle inefficient 1 for the purpose fomvhioh itis designed i Forrthe; purpose of l'overcoming the, above i disadvantages and tol insure; the docking of f the opposed .threaded rods in theinproperly `adjusted; position sonthat therehwill be no possibility of `the` rods Working loose `and 2m causing' ai slack to occur, 1 I :have provided a 11 lhighly i novel, i yetsimple wmeans Ufer; comypressingthe threadedeend'portions `of the fyolreeofi the turnbuclrle4 through which the rods extend. Y A2 further-object is to :provide a turnhuckle which is of such constructionu as to; obviate the necessity Lof havingi to provide lock 'nuts for securing the threaded rods in their properlyadj usted; positions, which look nuts ordinarily: causer Ldistortion foi` the :threads of the rods When strain/is placed upon thefturnbuckle.

furtherobject istosprovide a turnbuekle of the above mentioned? character, f which `is simplefn construction, inexpensive,

strong and durable, and. funthenA =Well adapted toL the. purpose s. for-which it,v is.;designed. Other objects and l advantages 1of the; inaention will: become apparenti:` during the .bourse of the followingdescription-taken in connection4 with the accompanying, dravvrang.

'ln Athe accompanying` 'drawing storming ,part of this applicationnand in whichlike f numerals designate like parts throughout-.the

same:

r Figure l is, a-side'elevationL-o the turnbuckle embodying my invention,- and Figure 2' is ian? enlarged ragmentarydei tail, partlyin-sectionpandv.partly fin-elevation ,ofoneof the splitend portionsi ofethe `yoke `wor `frame 'showing the i tightening Vbolt and the safety rivets associated therewith.

11, 1925. Seriali Non 68,432.

In. the drawing, wherein for. the purpose of 'illustration is shown.,theupreferredfembodiment of my invention, the numeral l designates general-ly v my improved ,turn buckle,athe saine comprising a vyoke lori frame member Qxwhich includes. the elongated parallel\.vspaced arms ande respeetively, and the thickened end portions! 5; and Gili-espec- 4 ,tively.

Arsa is ,more clearly illustrated in, Eig'ure 1, the ends ofitheiarm Siare/slightlyeared outWa-rdlyf. While ,ft-he ends .of the othery farm 4 are provided 'With-the enlargement 7,-the purpose of which willfbe hereinafter more vfully described.

The yokefor frame member; 2 is .preferably A an integral casting. Theend members 5 and 6 are `provided `withialigned threaded bores |for receiving theioppositely threadedrods 8 and 94 respectively. It iseof course toebe ,nnderstood .that =thefbore 'of the'end member 5, will have its :threadsdisposed in` ioneedia reotion, while the threads ofthe borevin :the -rother end, member 6 Will be-disposed in-an :opposite1 direction for accommodating 1, the deft andrighthand threadsof therodszand 9respective ly, in the mannerawellilnown in: thetart. The. outenends rofthe threadedV rods carry thereon theusual fengaging,elements l()l and 1l, -respeotivelyffin thevmannera-lso Wellknovvn yin the art. JAS the same .forrnsa'no' important ypart of@ the presentamxventionV a iaurther idescniption thereof :is ,thought.unnecessary Ordinarily` look or j am@ :nuts ,are threaded een thea threaded rodsy lof a turnbucklee` and 1 engage the respective endf meinbersf ,-of 1 :the 'poker-for holdingl the rodsv in :theimp-roper v adjusted Affpositions. HoivevelgI due 1to1 the :considerable vibrations to Whiohi ther turnbuckle is subjected, When in use, thereais4 a tendency of `the threaded-rods to xWork (loose, and asia resultthe :lock orujam'inutswvill edistort; the threadsiof the rod,; and thereby render' the rod of little or ino-@Eurther use. .-Eurthermoraa these lock or jam -nnts as;are r 'ordinarilyy employed' Will not` effectively ihold the threaded rods :ofi the turnbuckleffrom -ixvorking loose y,and eausing'rslack towt'alre fiplace. For the purpose of overoorningi 'the 'above ,disadvantages and :to further effective- ."lyaand rigidly seouref the; threaded" rodsfof *the turnbuckles in theirpreper adjusted `positions without any danger of the threads of the rods becoming distorted, I have provided a highly novel and simple means, the construction of which will be presently apparent.

Each end of the arm 4 is slit longitudinally as illustrated at 12, and the slot extends through the threaded bores of the respective end members in the manner shown in the dotted lines, more clearly in Figure 1. A tightening boit 13 extends transverse ly through the enlarged portion 7 at each end of the arm 4 in the outermost lower portion of the enlargement. A. nut 14 is threaded on the threaded end of each tightening bolt 13, and as is more clearly illustrated in Figure 2, the head of the bolt indicated at 15 engages one side face of the enlarged portion at each end of the arm 4, the nut 14 being adapted to engage the opposite side face. Manifestly, by turning the nut 14 in one direction, the split end of the arm 4 will be tightening, and at the same time the threaded bores of the respective end members will also be clamped around the respective threaded rods for effectively and rigidly securing the latter in their proper adjusted positions.

There is a possibility sometimes of the tightening bolts 1.3 breaking or the threads thereof becoming stripped and for the purpose of preventing the casual displacement of the threadedrods from the ends of the yoke or frame should this happen, there is provided what I term as safety rivets in connection with the split portions of the respective ends of the arm 4. The safety rivet is indicated at 16 and as clearly illustrated in Figure 2, the same extends transversely through the enlarged portion 7 at each end of the arm at a point inwardly and slightly above the respective tightening bolt 13, the head 17 of each vrivet engaging one side face of the enlargement 7, while the upset end 18 is adapted to be disposed within a countersunk opening 19 provided therefor in the opposite side face of the enlargement. These safety rivets will limit the expansion of the split portions of the ends of the arm 4 so that the threaded rod will not become disengaged from theirrespective threaded bores in the end members of the yoke.

It is obvious that by loosening the nut 14, the compression ou the split ends of the arm 4 is reduced to permit the rods 8 and 9 to be moved either inwardly or outwardly and after the proper adjustment has been made, the nuts are again tightened, thus causing the split ends of the arm 4 to `be drawn together. It is of course understood that when the rods are being adjusted, the end portions of the arm 3 which are solid will take the load or pressure and when the proper adjustment is made, and the split ends of the arm 4 are compressed, the load or pressure will be 'divided between the ends of the arm.

The provision of a turnbuckle of the above mentioned character will compensate for any vibration to which the turnbuckle is subjected when in use, and furthermore will insure the holding of the oppositely threaded rods in their proper adjusted positions so that there will be no possibility of any slack taking place. i

1While I have shown the preferred embodiment of my invention, it is to be understood that minor changes in the size, shape and arrangement of parts may be resorted to without departing from the spirit or scope of the invention. i

Having thus described the invention, what I claim as new is i 1. A turnbuckle comprising a yoke, the ends thereof being provided with threaded bores, the yoke being split longitudinally at each end portion, the slits extending through the respective threaded bores, a pair of oppositely threaded rods receivable in the respective bores, and a tightening bolt extending transversely through each of the slit portions of the yoke, and means for limiting the lateral expansion of the split portions of the yoke should the tightening bolt become disengaged from the split portion of the yoke.

2. A turnbuckle comprising a yoke, the

ends thereof being provided with threaded bores, the yoke being split longitudinally at each end portion, the slits extending through the respective threaded bores, a pair of oppositely threaded rods receivable in the respective bores, and tightening bolt extending transversely through each of the slit portions of the yoke, and means for limiting the lateral expansion of the split portions of the yoke should the tightening bolt become disengaged from the split portion of the yoke, said means comprising rivets extending `transversely through the slit portions of the yoke.

3. A turnbuckle comprising a yoke including parallel spaced arms and end members bridging the ends of the arms, each of said fend members being provided with a threaded bore, one of said arms being slit longitudinally at each end thereof, the slits extending into the respective threaded bores of the end members, a pair of oppositely threaded rods receivable in the respective bores, and a tightening bolt extending transversely through the slit portions of each of the ends of said arm for securing the rods in their adjusted positions, and a safety rivet extending transversely through the split portions of each end of said arm and arranged inwardly of the respective tightening' bolts `for limiting the lateral expansion of the split portions of the arm when the tightening bolts are rendered inoperative.

4. A yoke including parallel spaced arms and end members bridging the ends of the arms, each of said end members being provided With the threaded bore, a pair oit oppositely threaded rods receivable in the bores, one of said armsbeing provided with an enlargement at each end thereof, each of said enlargements being split longitudinally, the slits extending into communicaf tion with the respective threaded bores, a tightening bolt extending transversely through the split port-ions of each enlargement adjacent the outer end thereof for securing the vthreaded rods in their adjusted positions with respect to the bores.

5. A yoke including parallel spaced arms and end members bridging the ends of the arms, each of said end members being provided With the threaded bore, a pair of oppositely threaded rods receivable in the bores, one of said arms being provided with an enlargement at each end thereof, each ot' said enlargements being split longitudinally, the slits ext-ending into communication With the respective threaded bores, atightening bolt extending transversely through the split portions or' each enlargement adjacent the outer end thereof for securing the threaded rods in their adjusted positions with respect to the bores, and a safety rivet disposed transversely through the split portions of each enlargement at a point inwardly from the respective tightening bolts.

In testimony whereof I ahx my signature.

ROBERT C. MOARTHUR. 

